Welding tool



Y Feb. 3, 1925- 1,525,277

G. DINCOGNITO WELDING TOL Filed Oct. 18, 1923 2 Sheets-Sheet 1 Feb. 3, 1925. 1,525,277

G. DINCOGNITO WELDING TOOL Filed Oct. 18, 1923 2 Sheets-Sheet 2 Zx 37 f t IFE- if ff 2f Z, I I: f9.5 I

5' l i /Z l 24 g l PATENT OFFICE.

GUY DINCOGNITO, OF CHICAGO, ILLINOIS.

WELDING TOO'L.

Application filed October 18, 1923.

to such a tool or attachment used with electric spot welding machines, and has for its main object to provide means for welding wires together to form T-butt joints.

Another object is to provide a. welding 1 tool with means for positively holding one.

wire in position so that the other wire can be held across the end of the first Wire during the welding operation to produce a T-butt connection.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which,

Fig. 1 is an elevation showing my welding tool applied to an electric spot welding machine;

Fig. 2 is an enlarged plan view of the tool, taken along line 2 2 of Fig. 1;

Fig. 3 is an enlarged front view thereof; and

Fig. 4 is an enlarged horizontal section taken on line 4-4 of Fig. 1.

In the drawings I have illustrated my invention in connection with a known type of electric spot welding machine 10 which is provided with arms 11 and 12 mounted thereon by means of brackets 13 and 14 and suitable bolts for clamping said arms in said brackets in their adjusted positions. The arms are provided with the usual welding coppers 15, adjustably mounted in knuckles at the forward ends of said arms and clamped in adjusted position therein by means of set screws 16 or the like.

Heretoore it has been customary with this type of machine, in welding wires for the production of wire lamp shade frames and similar wire goods, to hold the wires joined in cross relation between the points of the weldin coppers, which wouldy produce a thick, ouble joint undesirable in this class of goods. To overcome this defect I provide Serial No. 669,257.

a novel weldingr tool with the use of which a neat and durable T-bntt joint is produced, which could not be produced with the usual electric welding machine with the ordinary welding coppers, owing to the general arrangement of the elements of such machine.

The preferred form ot my novel welding tool as illustrated comprises a block or body member 18 of material which is of high electric conductivityv`v as copper or the like, and which is provided with means for mounting it on one of the arms of said machine, said means preferably consisting of a stem 19 of similar electricity conducting which is preferably mounted in said block and is of a proper size to be mounted in the knuckle of one of said arms, preferably in the lower arm 12, in place of the removed welding copper. Jaws 2O and 21 are pro` vided on block 18, the jaw 20 carrying front and bottom plates 22 and 23 detachably mounted thereon with screws 22 and 23 respectively, Jfor retaining a. clamping member or plate 24 movably located between said jaws in a depression or groove 25. An adjusting screw 26 is threaded through jaw 2O and engages plate 24 to force it inward and clamp the wire 27 between said plate and the jaw 21.

Means is provided for operating said adjusting screw and clamp plate, said mea-ns comprising a crank arm 23 having a boss 29 which is fastened with a set screw 30 on the head 31 of adjusting screw 26, for manually operating the clamp plate 24. Said arm is preferably pivoted to a link 32 connected to apedal lever 33 which is pivoted to a machine 10 and carries a foot pedal 34 for opera-ting the clamp plate to grip the wire, while a. spring 35 is connected to said lever and to a lug 36 on the machine for actuating said lever to release the clamp plate. This lever 35 may also be arranged to control the electric current for operating the machine if desired.

In welding wires with the use of my improved welding tool, the stem 19 of the tool is mounted in the knuckle of one of the welding arms and said arm adjusted, then the wire 27 is clamped between members 21 and 24 by depressing pedal lever 33, so that a slight portion of said wire protrudes above the welding tool toward the point of the welding copper 15 adjusted in theother welding arm; the other wire 37 is' then placed with its side across the end of wire material, F

2T andimmediatelj' beneath the Welding lcopper 15, as best shown in Fig. 3, and the current is turned on to Weld these Wires to-V gether to form a neat and durable T-bntt joint.

lliile I have illustrated and described the preferred form of construction for carrviugm)T invention into'eiiect, this is capable or" variation and modification Without departing` from the spirit'foi1 the' invention. L

Y therefore, do not Wish to be -llimited tothe 'into a T-bu'tt ljoint with another Wire re precise details of construction set fortli,but desire to avail myself of such'variations and modifications as come Within the scope oi' the appended' claims. Y

Having` described my invention what I claim as neiv-anddesire to'secure by Letters Patent, is: y

l; In a Welding` machine having arms eX- tending substantiallj7 parallel therefrom for supporting Welding coppers 'transversely intlieir ends, a Welding' tool having a" stemV mountable in place of one of said4 coppers, and means on said tool for clamping a Wire 'parallel to said stem and to protrude toward tained adj acent'said other copper, and means includinga plate With an adjusting bolt for closing and opening said jaw.

The combinatiomvvith an electric Weldingmachine having arinswith means: for adjustably retaining Welding coppers, of a Welding tool havingr a stem `V`mounted in place of one ot said coppers, a jaw on said tool for holding` a Wire With its end protruding toward another Welding copper to be Welded against the side of another Wire adjacentv said other copper`r an adjustable clamping member in said jaw, and means actuated by a foot pedal for operating said clamping member.

. 4. A Welding; tool provided with means for mounting'it on a Welding; machine, said tool comprising a jaw ofhifzli electric con= ductivity and arranged for receivinga Wire, almovable clamping member mounted inA said jaw for 'clamping the Wire in positionjv a bolt threaded inone j aW for moving said-'clamping member and. Wire to the other jaw, Iand a foot actuated crank arin for operating,` said i bolt.

5. A Welding' tool provided with' means for 'mounting it on a Welding machine7 said tool being` constructed of material of high electric conductivitvand comprising;A ap'pair of jaws for receiving a Wire, a clamping Vplate mounted .aga-inst one of said 'jaws to clamp a Wire between it and the-otherjaw, threadedfimeans mounted through-the first said jaw-to vactuate said clamping plate, a crank arm mounted on the head of-sa'id threaded` means, and foot actuated'. means for operating' said crank arm. l

In 'testimony 'whereof `Ihave signed v.my

name to'this speciication'inthe VVpresence of p Witnesses.

tivo subscribing VGUY DINGOGNITO. Witnesses:

FREDA C. APPLETON,

Louisa SYNWALT. 

